Abstract: According to an aspect of the invention there is provided a system for use in monitoring one or more physiological states of a user, the system comprising one or more processors configured to: receive a pressure signal representing pressure within a cushioning layer supporting at least a portion of a user and an acoustic signal representing acoustic vibrations within the cushioning layer; and determine, based on the pressure signal and acoustic signal, the one or more physiological states of the user.

Abstract: Systems and methods for use in monitoring one or more physiological parameters of a user. The system comprises: at least one sensing unit comprising at least one vibration sensor; and at least one elastic tube configured to be embedded within a cushioning layer for supporting at least a portion of the user. One end of the at least one tube is sealed and the other end of the at least one tube is closed by the at least one sensing unit so as to form a volume that is filled with fluid and that is defined by one or more inner walls of the tube and a surface of the at least one sensing unit. The at least one elastic tube is configured to transmit vibrations from one or more sections of the at least one tube to the at least one sensing unit for detection by the at least one vibration sensor.